CERN Accelerating science

Article
Report number hep-ph/0001279 ; IFA-HEP-12-25 ; IFA-HEP-12-25 ; DIRAC-CONF-1999-06
Title DIRAC Experiment and Test of Low-Energy QCD
Author(s)

Pentia, M. (Bucharest, IFIN-HH) ; Adeva, B. (Santiago de Compostela U.) ; Afanasev, L. (Dubna, JINR) ; Benayoun, Maurice (Paris U., VI-VII) ; Brekhovskikh, V. (Serpukhov, IHEP) ; Caragheorgheopol, G. (Bucharest, IFIN-HH) ; Cechak, T. (Prague, Tech. U.) ; Chiba, M. (Tokyo Metropolitan U.) ; Constantinescu, S. (Bucharest, IFIN-HH) ; Doudarev, A. (Dubna, JINR) ; Dreossi, D. (Trieste U. ; INFN, Trieste) ; Drijard, D. (CERN) ; Ferro-Luzzi, M. (CERN) ; Gallas Torreira, T. (CERN ; Santiago De Compostela U.) ; Gerndt, J. (Prague, Tech. U.) ; Giacomich, R. (Trieste U. ; INFN, Trieste) ; Gianotti, P. (Frascati) ; Gomez, F. (Santiago de Compostela U.) ; Gorin, A. (Serpukhov, IHEP) ; Gortchakov, O. (Dubna, JINR) ; Guaraldo, C. (Frascati) ; Hansroul, M. (CERN) ; Hosek, R. (Prague, Tech. U.) ; Iliescu, M. (Frascati ; Bucharest, IFIN-HH) ; Kalinina, N. (Dubna, JINR) ; Karpoukhine, V. (Dubna, JINR) ; Kluson, J. (Prague, Tech. U.) ; Kobayashi, M. (KEK, Tsukuba) ; Kokkas, P. (Basel U.) ; Komarov, V. (Dubna, JINR) ; Koulikov, A. (Dubna, JINR) ; Kouptsov, A. (Dubna, JINR) ; Krouglov, V. (Dubna, JINR) ; Krouglova, L. (Dubna, JINR) ; Kuroda, K.I. (Waseda U.) ; Lanaro, A. (CERN ; Frascati) ; Lapshine, V. (Serpukhov, IHEP) ; Lednicky, R. (Charles U.) ; Leruste, P. (Paris U., VI-VII) ; Levi Sandri, P. (Frascati) ; Lopez Aguera, A. (Santiago de Compostela U.) ; Lucherini, V. (Frascati) ; Maki, T. (Kyushu U.) ; Manuilov, I. (Serpukhov, IHEP) ; Montanet, L. (CERN) ; Narjoux, J.L. (Paris U., VI-VII) ; Nemenov, L. (CERN ; Dubna, JINR) ; Nikitin, M. (Dubna, JINR) ; Nunez Pardo, T. (Santiago de Compostela U.) ; Okada, K. (Kyoto Sangyo U.) ; Olchevsky, V. (Dubna, JINR) ; Pazos, A. (Santiago de Compostela U.) ; Penti, M. (Bucharest, IFIN-HH) ; Penzo, A. (Trieste U. ; INFN, Trieste) ; Perreau, J.M. (CERN) ; Petrascu, C. (Frascati ; Bucharest, IFIN-HH) ; Plo, M. (Santiago de Compostela U.) ; Ponta, T. (Bucharest, IFIN-HH) ; Pop, D. (Bucharest, IFIN-HH) ; Riazantsev, A. (Serpukhov, IHEP) ; Rodriguez, J.M. (Santiago de Compostela U.) ; Rodriguez Fernandez, A. (Santiago de Compostela U.) ; Rykaline, V. (Serpukhov, IHEP) ; Santamarina, C. (Santiago de Compostela U.) ; Schacher, J. (Bern U.) ; Sidorov, A. (Serpukhov, IHEP) ; Smolik, J. (Prague, Tech. U.) ; Takeutchi, F. (Kyoto Sangyo U.) ; Tarasov, A. (Dubna, JINR) ; Tauscher, L. (Basel U.) ; Trusov, Sergey V. (Dubna, JINR) ; Vazquez, P. (Santiago de Compostela U.) ; Vlachos, S. (Basel U.) ; Yazkov, V. (Dubna, JINR) ; Yoshimura, Y. (KEK, Tsukuba) ; Zrelov, P. (Dubna, JINR)

Publication 2000
Imprint 28 Jan 2000
Number of pages 10
In: International Symposium on Advances in Nuclear Physics, Bucharest, Romania, 9 - 10 Dec 1999, pp.407
Subject category Particle Physics - Phenomenology
Accelerator/Facility, Experiment CERN PS ; DIRAC PS212
Abstract The low-energy QCD predictions to be tested by the DIRAC experiment are revised. The experimental method, the setup characteristics and capabilities, along with first experimental results are reported. Preliminary analysis shows good detector performance: alignment error via $\Lambda$ mass measurement $m_\Lambda = 1115.6 MeV/c^2$ with $\sigma = 0.92 MeV/c^2$, $p \pi^-$ relative momentum resolution $\sigma_Q \approx 2.7 MeV/c$, and evidence for $\pi^+ \pi^-$ low momentum Coulomb correlation.

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